Welding device for stainless steel pipe assembly

Abstract

The invention belongs to the technical field of welding devices, and particularly relates to a welding device for stainless steel pipe assembly, which comprises a welding rack and a welding machine assembly movably mounted at the end part of the welding rack, a pipe plate is movably mounted in the welding rack, and an automatic feeding assembly is further slidably mounted in the welding rack. The pipe groove is located on the moving path of the automatic feeding assembly, a push-pull plate is further movably installed at the end of the welding machine frame, the automatic feeding assembly moves towards the push-pull plate, the push-pull plate exerts extrusion force on the multiple stainless steel pipes, and meanwhile the conveying effect of the multiple conveying assemblies is matched, so that the multiple stainless steel pipes are welded. The automatic feeding assembly drives the multiple stainless steel pipes to move towards the position of the pipe plate, meanwhile, the multiple conveying assemblies convey the multiple stainless steel pipes into the pipe grooves at the same time till the multiple stainless steel pipes reach the welding positions, the multiple stainless steel pipes are located in the same depth of the corresponding pipe grooves at the moment, and the welding positions of the stainless steel pipes on the pipe grooves can be accurately determined.

Description

Technical Field

[0001] The present invention belongs to the field of welding devices, and specifically relates to a welding device for assembling stainless steel pipes. Background Art

[0002] The assembly welding of stainless steel pipes can be applied to multiple processes and constructions. Among them, assembling and welding multiple stainless steel pipes to a tube sheet is also one of its application processes. The welding of stainless steel pipes to the tube sheet is a process of fixing stainless steel pipes on the tube sheet, which is widely used in fields such as heat exchangers, pressure vessels, and chemical equipment. The specific method is to insert the stainless steel pipe to be welded into the through groove on the tube sheet for fixation, and then perform circular welding with a welding head to connect the contact parts between the tube sheet and the stainless steel pipe.

[0003] A patent document with the publication number CN216264255U discloses a device for fixing the assembly and welding of stainless steel square pipes, including a base and a laser cutting machine. Through the double-headed lead screw in the fixing device and the two sliding rods on its left and right sides, the two clamping parts on its left and right sides are driven to move closer or apart. At the same time, the movement of the spur gear in the clamping part on the fixed toothed plate drives the bevel gear to perform an oblique lifting movement, realizing the clamping and fixing of the first stainless steel square pipe. At the same time, the bevel gear protruding from the second transverse groove also limits the second stainless steel square pipe in the second transverse groove, ensuring that the second stainless steel square pipe can be accurately and smoothly inserted into the rectangular opening of the first stainless steel square pipe.

[0004] In the traditional technical solution, when inserting a stainless steel pipe into a tube groove, usually more cumbersome steps and more labor are required. And the stainless steel pipe needs to be inserted into a certain fixed position in the tube groove, and better results can be achieved during assembly welding at this time. However, in the traditional technical solution, the insertion depths of stainless steel pipes into different tube grooves are different, resulting in different welding positions of multiple stainless steel pipes during the welding of the tube sheet and the stainless steel pipes, reducing the quality of the workpiece after assembly welding.

[0005] Therefore, the present invention provides a welding device for assembling stainless steel pipes. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is as follows: A welding device for assembling stainless steel pipes according to the present invention includes a welding machine frame and a welding machine assembly movably installed at the end of the welding machine frame. A tube plate is movably installed inside the welding machine frame, and an automatic feeding assembly is also slidably installed inside the welding machine frame. The tube groove is on the moving path of the automatic feeding assembly. A push-pull plate is also movably installed at the end of the welding machine frame. The positions of the tube plate and the automatic feeding assembly are between the welding machine assembly and the push-pull plate; A plurality of tube grooves are penetrated and opened inside the tube plate, and the plurality of tube grooves are evenly distributed on the tube plate. A plurality of feeding grooves are penetrated and opened inside the automatic feeding assembly, and the plurality of feeding grooves are evenly distributed on the automatic feeding assembly. A transportation assembly is movably installed inside the plurality of feeding grooves, and the transportation assembly is used for transporting stainless steel pipes inside the feeding grooves.

[0008] Preferably, a clamping groove is opened inside the welding machine frame, the tube plate is inserted into the clamping groove, and a plurality of guide rail grooves are also opened inside the welding machine frame. The automatic feeding assembly slides inside the welding machine frame through cooperation with the plurality of guide rail grooves. A lifting assembly is installed above the L-shaped end of the welding machine frame, and the lifting assembly is connected to the welding machine assembly through a rope. A through groove is penetrated and opened above the welding machine frame.

[0009] Preferably, the welding machine assembly includes a fuselage and a padlock fixedly installed above the fuselage. The padlock is connected to the rope provided by the lifting assembly. A plurality of thimbles are evenly distributed on the side of the fuselage facing the tube plate. A guide post is fixedly installed on the same side of the fuselage. A rotary power supply member is movably installed outside the guide post. The rotary power supply member is movably installed on the side of the fuselage, and a welding head is fixedly installed at the end of the rotary power supply member. The welding head faces the guide post.

[0010] Preferably, a plurality of component grooves are opened inside the automatic feeding assembly. The component grooves are used to communicate two vertically adjacent feeding grooves. The transportation assembly is movably installed inside the corresponding component grooves. A plurality of drive motors are installed outside the automatic feeding assembly, and the plurality of drive motors are used to supply power to the plurality of transportation assemblies. The transportation assembly includes a plurality of transportation members II and transportation members III. The transportation member II is vertically above the transportation member III, and the transportation member II and the transportation member III are inside the same component groove.

[0011] Preferably, a plurality of transportation members I are movably installed inside the topmost and bottommost parts of the automatic feeding assembly. The plurality of transportation members I are movably installed at the inner top of the plurality of feeding grooves opened at the topmost part of the automatic feeding assembly, and the plurality of transportation members I are movably installed at the inner bottom of the plurality of feeding grooves opened at the bottommost part of the automatic feeding assembly. The transportation members I, II, and III are components made of the same structure.

[0012] Preferably, the transport component three includes a plurality of gears movably mounted inside the component groove, the plurality of gears are axially grouped in pairs, a middle end wheel is fixedly mounted between the two axially distributed gears, and a conveyor belt is movably mounted on the outer sides of the plurality of middle end wheels.

[0013] Preferably, the transport member 3 is engaged with the transport member 2 located above the transport member 3 through a plurality of gears, and the gears are connected to the corresponding drive motors through shafts.

[0014] Preferably, the teeth fixedly mounted on the outer side of the gear are arranged in an arc shape toward the outer end, and the plurality of middle end wheels are connected in transmission via a conveyor belt.

[0015] Preferably, an auxiliary plate is movably installed above the welding frame, the width of the through slot is greater than the width of the auxiliary plate, and the cross-sectional area of the auxiliary plate corresponds to the cross-sectional area of the automatic feeding assembly.

[0016] Preferably, a plurality of air extraction components are fixedly installed on one side of the auxiliary plate, and the plurality of air extraction components are evenly distributed on one side of the auxiliary plate. An air extraction component is fixedly installed on the other side of the auxiliary plate, and a plurality of air guide tubes are fixedly installed on the side of the air extraction component. The air extraction component includes a rubber ring and a fixed ring fixedly installed on one side of the auxiliary plate, and the fixed ring is located at the center position of the rubber ring. A vertical cavity is opened inside the auxiliary plate, and the vertical cavity is connected with the inside of the fixed ring.

[0017] The beneficial effects of the present invention are as follows: 1. The welding device for assembling stainless steel pipes described in the present invention uses an automatic feeding assembly to drive multiple inserted stainless steel pipes to move toward a push-pull plate through electric drive until the multiple stainless steel pipes are against the side of the push-pull plate. The multiple stainless steel pipes are aligned to their initial positions inside the automatic feeding assembly through the existence of the push-pull plate, and then continue to move toward the push-pull plate through the automatic feeding assembly. At this time, the push-pull plate applies an extrusion force to the multiple stainless steel pipes, and at the same time, cooperates with the transportation function of multiple transport assemblies. The automatic feeding assembly drives the multiple stainless steel pipes to move toward the tube plate position. At the same time, the multiple transport assemblies transport the multiple stainless steel pipes to the inside of the pipe groove at the same time until they reach the welding position. At this time, the multiple stainless steel pipes are in the same depth of the corresponding pipe groove, and the welding position of the stainless steel pipes on the pipe groove can be accurately determined.

[0018] 2. A welding device for stainless steel pipe assembly according to the present invention. After the rusty steel pipe is inserted into the corresponding pipe groove for welding, the welding machine assembly is taken, and multiple thimbles provided at the front end of the welding machine assembly simultaneously abut against the side surface of the tube sheet. At this time, the guide post is inserted into the corresponding stainless steel pipe, and the front end of the stainless steel pipe is located inside the corresponding pipe groove. After the guide post is inserted a certain distance, the welding head can contact the fitting position of the stainless steel pipe and the corresponding pipe groove. At this time, the welding head is arranged towards the guide post and can rotate annularly around the guide post. With the welding function, the fitting position of the stainless steel pipe and the pipe groove is welded, which can further accurately position the welding of the tube sheet and the stainless steel pipe.

[0019] 3. A welding device for stainless steel pipe assembly according to the present invention. The teeth continuously rotating on the outside of multiple gears rotating forward and reversely can all contact the outside of the stainless steel pipe and all provide a thrust force to the stainless steel pipe. That is, at this time, multiple stainless steel pipes can move towards the inside of the pipe groove in the corresponding feeding groove. Only one driving force is required for the driving of the transport member two and the transport member three on the same horizontal plane, which can save resources. And by the gears rotating forward and simultaneously rotating reversely to provide a thrust force for the movement of the stainless steel pipe, a better transport effect can be achieved by reducing the number of structures. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is the overall three-dimensional view of the present invention; Figure 2 is the three-dimensional schematic diagram of the welding machine assembly in the present invention; Figure 3 is the three-dimensional schematic diagram of the welding frame in the present invention; Figure 4 is the three-dimensional schematic diagram of the automatic feeding assembly in the present invention; Figure 5 is the three-dimensional schematic diagram of the transport assembly in the present invention; Figure 6 is the three-dimensional schematic diagram of the transport member two and the transport member three in the present invention; Figure 7 is the three-dimensional schematic diagram of the transport member three in the present invention; Figure 8 is the three-dimensional schematic diagram of the automatic feeding assembly and the auxiliary plate in the present invention; Figure 9 is the three-dimensional schematic diagram of the auxiliary plate in the present invention.

[0022] In the figure: 1, welding frame; 11, clamping groove; 12, lifting component; 13, through groove; 14, guide rail groove; 2, tube sheet; 21, tube groove; 3, welding machine component; 31, fuselage; 32, padlock; 33, ejector pin; 34, rotary power supply component; 35, welding head; 36, guide post; 4, automatic feeding component; 41, drive motor; 42, feeding groove; 43, component groove; 5, push-pull plate; 6, transportation component; 61, first transportation part; 62, second transportation part; 63, third transportation part; 631, gear; 632, middle-end wheel; 633, conveyor belt; 7, auxiliary plate; 71, air extraction component; 711, rubber ring; 712, fixed ring; 72, vertical cavity; 73, air extraction member; 74, air guide pipe. Detailed implementation manners

[0023] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific implementation manners.

[0024] Embodiment 1: As Figures 1-5 shown, a welding device for stainless steel pipe assembly according to an embodiment of the present invention includes a welding frame 1 and a welding machine component 3 movably installed at the end of the welding frame 1. A tube sheet 2 is movably installed inside the welding frame 1, and an automatic feeding component 4 is also slidably installed inside the welding frame 1. The tube groove 21 is on the moving path of the automatic feeding component 4. A push-pull plate 5 is also movably installed at the end of the welding frame 1. The positions of the tube sheet 2 and the automatic feeding component 4 are between the welding machine component 3 and the push-pull plate 5; A plurality of tube grooves 21 are penetrated and opened inside the tube sheet 2, and the plurality of tube grooves 21 are evenly distributed on the tube sheet 2. A plurality of feeding grooves 42 are penetrated and opened inside the automatic feeding component 4, and the plurality of feeding grooves 42 are evenly distributed on the automatic feeding component 4. A transportation component 6 is movably installed inside the plurality of feeding grooves 42, and the transportation component 6 is used for transporting stainless steel pipes inside the feeding grooves 42.

[0025] Specifically, the tube sheet 2 is inserted into the fixed position inside the welding frame 1. At this time, the tube sheet 2 and the automatic feeding component 4 are on the same path. Push the push-pull plate 5 to separate it from the welding frame 1. At this time, multiple stainless steel tubes to be welded can be taken from the rear end of the welding frame 1 and inserted into the feeding groove 42 of the automatic feeding component 4 until multiple feeding grooves 42 are each inserted with a stainless steel tube. After the stainless steel tube is inserted into the feeding groove 42 to a certain position, it is blocked by the transportation component 6, that is, multiple stainless steel tubes can only be inserted into a part of the corresponding feeding groove 42. Then push the push-pull plate 5 to insert it into the welding frame 1. At this time, the automatic feeding component 4 and the push-pull plate 5 are on the same path. Through electric drive, the automatic feeding component 4 drives the multiple inserted stainless steel tubes to move towards the push-pull plate 5 until the multiple stainless steel tubes abut against the side of the push-pull plate 5. Through the presence of the push-pull plate 5, the multiple stainless steel tubes are aligned at the preliminary position inside the automatic feeding component 4. Then, the automatic feeding component 4 continues to move towards the push-pull plate 5. At this time, the push-pull plate 5 gives a squeezing force to the multiple stainless steel tubes. At the same time, with the transportation function of the multiple transportation components 6, the stainless steel tubes can be positioned between the upper and lower adjacent transportation components 6, and then be transported by the transportation component 6. At this time, the transportation component 6 can be a traditional conveyor belt technology. When the stainless steel tubes can be transported by the transportation component 6 inside the automatic feeding component 4, the automatic feeding component 4 drives the multiple stainless steel tubes to move towards the position of the tube sheet 2. At the same time, the multiple transportation components 6 transport the multiple stainless steel tubes into the tube grooves 21 simultaneously until reaching the welding position. At this time, the multiple stainless steel tubes are at the same depth in the corresponding tube grooves 21, and the welding position of the stainless steel tubes on the tube grooves 21 can be accurately determined. The welding work is completed by the multi-axis movement of the welding machine component 3.

[0026] As Figures 1-3 shown, a clamping groove 11 is opened inside the welding frame 1, and the tube sheet 2 is inserted into the clamping groove 11. A plurality of guide grooves 14 are also opened inside the welding frame 1. The automatic feeding component 4 slides inside the welding frame 1 through cooperation with the plurality of guide grooves 14. A lifting component 12 is installed above the L-shaped end of the welding frame 1. The lifting component 12 is connected to the welding machine component 3 through a rope. A through groove 13 is opened through the upper part of the welding frame 1.

[0027] The welding machine component 3 includes a body 31 and a hanging lock 32 fixedly installed above the body 31. The hanging lock 32 is connected to the rope provided by the lifting component 12. A plurality of thimbles 33 are evenly distributed on the side of the body 31 facing the tube sheet 2. A guide post 36 is fixedly installed on the same side of the body 31. A rotary power supply member 34 is movably installed outside the guide post 36. The rotary power supply member 34 is movably installed on the side of the body 31. A welding head 35 is fixedly installed at the end of the rotary power supply member 34, and the welding head 35 faces the guide post 36.

[0028] Specifically, the tube sheet 2 is movably installed on the welding frame 1 by being inserted into the inside of the card slot 11. The lifting assembly 12 can wind the rope to lift and lower the welding machine assembly 3, so as to facilitate the multi-axis moving welding of the welding machine assembly 3. After the stainless steel tube is inserted into the corresponding tube slot 21 for welding, the welding machine assembly 3 is taken to make the multiple ejector pins 33 arranged at the front end of the welding machine assembly 3 simultaneously abut against the side surface of the tube sheet 2. And at this time, the guide posts 36 are inserted into the corresponding stainless steel tubes. At this time, the front end of the stainless steel tube is inside the corresponding tube slot 21. After the guide posts 36 are inserted a certain distance, the welding head 35 can contact the joint position of the stainless steel tube and the corresponding tube slot 21. At this time, the welding head 35 is arranged towards the guide posts 36 and can rotate annularly around the guide posts 36, and cooperate with the welding function to weld the joint position of the stainless steel tube and the tube slot 21, which can further accurately position the welding of the tube sheet 2 and the stainless steel tube.

[0029] As Figures 4-7 shown, a plurality of component slots 43 are opened inside the automatic feeding assembly 4. The component slots 43 are used to communicate two vertically adjacent feeding slots 42. The transportation assembly 6 is movably installed inside the corresponding component slots 43. A plurality of driving motors 41 are installed on the outer side of the automatic feeding assembly 4. The plurality of driving motors 41 are used to supply power to the plurality of transportation assemblies 6.

[0030] The transportation assembly 6 includes a plurality of second transportation members 62 and third transportation members 63. The second transportation members 62 are located vertically above the third transportation members 63, and the second transportation members 62 and the third transportation members 63 are inside the same component slot 43.

[0031] A plurality of first transportation members 61 are movably installed inside the topmost and bottommost parts of the automatic feeding assembly 4. The plurality of first transportation members 61 are movably installed at the inner top of the plurality of feeding slots 42 opened at the topmost part of the automatic feeding assembly 4, and the plurality of first transportation members 61 are movably installed at the inner bottom of the plurality of feeding slots 42 opened at the bottommost part of the automatic feeding assembly 4. The first transportation members 61, the second transportation members 62 and the third transportation members 63 are components made of the same structure.

[0032] The third transportation member 63 includes a plurality of gears 631 movably installed inside the component slot 43. The plurality of gears 631 are axially grouped in pairs, and a middle-end wheel 632 is fixedly installed between two axially distributed gears 631. A conveyor belt 633 is movably installed outside the plurality of middle-end wheels 632.

[0033] The third transportation member 63 meshes with the second transportation member 62 above the third transportation member 63 through the plurality of gears 631. The gears 631 are connected to the corresponding driving motors 41 through shafts.

[0034] Specifically, when the stainless steel tube is initially inserted into the feed trough 42, it will be blocked by the transport component 6. At this time, the stainless steel tube is blocked by the top or bottom teeth of the gear 631. When multiple stainless steel tubes are pressed against the side of the push-pull plate 5 and an extrusion force is applied, the stainless steel tubes will be squeezed toward the position of the tube plate 2 inside the feed trough 42. At the same time, the drive of multiple drive motors 41 can make the transport part 1 61, the transport part 2 62 and the transport part 3 63 operate, that is, the multiple gears 631 set in the transport part 3 63 rotate forward at the same time, and the multiple gears 631 set in the transport part 2 62 and the multiple gears 631 set in the transport part 3 63 rotate forward at the same time. 31 meshes with each other, and at this time, the multiple gears 631 set in the transport part 2 62 rotate in the reverse direction, and the teeth on the outside of the multiple gears 631 that rotate in the forward and reverse directions can contact the outside of the stainless steel pipe, and provide thrust to the stainless steel pipe, that is, at this time, the multiple stainless steel pipes can move from the inside of the corresponding feed trough 42 to the inside of the pipe trough 21, and the transport part 2 62 and the transport part 3 63 on the same horizontal plane only need one driving force to drive, which can save resources, and by providing thrust to the movement of the stainless steel pipe by the gears 631 that rotate in the forward and reverse directions at the same time, better transportation effect can be achieved by reducing the number of structures.

[0035] like Figure 7 As shown, the teeth fixedly mounted on the outside of the gear 631 are arranged in an arc shape toward the outer end, and multiple middle end wheels 632 form a transmission connection through a conveyor belt 633.

[0036] Specifically, the teeth on the outside of the gear 631 will continuously rotate and keep in contact with the outside of the stainless steel tube, and the arc-shaped setting of the outer end of the teeth can reduce the hard collision between the gear 631 and the stainless steel tube, thereby extending the service life of the structure.

[0037] Example 2: Figures 8-9 As shown, in contrast to Example 1, another embodiment of the present invention is that an auxiliary plate 7 is movably installed above the welding frame 1, the width of the through slot 13 is greater than the width of the auxiliary plate 7, and the cross-sectional area of the auxiliary plate 7 corresponds to the cross-sectional area of the automatic feeding assembly 4.

[0038] A plurality of air extraction components 71 are fixedly installed on one side of the auxiliary plate 7, and the plurality of air extraction components 71 are evenly distributed on one side of the auxiliary plate 7. A plurality of air extraction components 73 are fixedly installed on the other side of the auxiliary plate 7, and a plurality of air guide tubes 74 are fixedly installed on the side of the air extraction component 73. The air extraction component 71 includes a rubber ring 711 and a fixed ring 712 fixedly installed on one side of the auxiliary plate 7. The fixed ring 712 is located at the center position of the rubber ring 711. A vertical cavity 72 is opened inside the auxiliary plate 7, and the vertical cavity 72 is connected to the inside of the fixed ring 712.

[0039] Specifically, the tube sheet 2 is inserted into the internal fixed position of the welding frame 1. At this time, the tube sheet 2 and the automatic feeding component 4 are on the same path. Push the push-pull plate 5 to separate it from the welding frame 1. At this time, multiple stainless steel tubes to be welded can be taken from the rear end of the welding frame 1 and inserted into the feeding slots 42 of the automatic feeding component 4 until multiple feeding slots 42 are each inserted with a stainless steel tube. After the stainless steel tube is inserted into the feeding slot 42 to a certain position, it is blocked by the transportation component 6, that is, multiple stainless steel tubes can only be inserted into a part of the corresponding feeding slot 42. Subsequently, push the push-pull plate 5 to insert it into the welding frame 1. At this time, the automatic feeding component 4 and the push-pull plate 5 are on the same path. Electrically drive the automatic feeding component 4 to drive the multiple inserted stainless steel tubes to move towards the push-pull plate 5 until the multiple stainless steel tubes abut against the side of the push-pull plate 5. Through the presence of the push-pull plate 5, align the multiple stainless steel tubes at the preliminary position inside the automatic feeding component 4. Subsequently, continue to move the automatic feeding component 4 towards the push-pull plate 5. At this time, the push-pull plate 5 gives a squeezing force to the multiple stainless steel tubes. At the same time, with the transportation function of the multiple transportation components 6, the stainless steel tubes can be positioned between the upper and lower adjacent transportation components 6 and then be transported by the transportation component 6. At this time, the transportation component 6 can be a traditional conveyor belt technology. When the stainless steel tubes can be transported by the transportation component 6 inside the automatic feeding component 4, the automatic feeding component 4 drives the multiple stainless steel tubes to move towards the position of the tube sheet 2. At the same time, the multiple transportation components 6 transport the multiple stainless steel tubes into the tube slots 21 simultaneously until the welding position is reached. At this time, the multiple stainless steel tubes are at the same depth in the corresponding tube slots 21, and the welding position of the stainless steel tubes on the tube slots 21 can be accurately determined. The welding work is completed by the multi-axis movement of the welding machine component 3. When the multiple stainless steel tubes are transported into the tube slots 21 and waiting for welding, take the auxiliary plate 7 and insert it into the welding frame 1 through the through slot 13 and fit it against the side of the automatic feeding component 4. At this time, the auxiliary plate 7 is in the middle position between the automatic feeding component 4 and the push-pull plate 5, and multiple fixing rings 712 provided on one side of the auxiliary plate 7 are inserted into the corresponding feeding slots 42. When the auxiliary plate 7 and the automatic feeding component 4 are in contact, the rubber ring 711 is attached to the side of the automatic feeding component 4, and the diameter of the rubber ring 711 is larger than the diameter of the feeding slot 42. Electrically drive the air extraction member 73 to generate a suction force. At this time, the suction force acts on the stainless steel tubes inside the feeding slot 42 through the vertical cavity 72 and the multiple fixing rings 712. Under the continuous action of the suction force, the air between the auxiliary plate 7 and the automatic feeding component 4 can be reduced, making the automatic feeding component 4 and the auxiliary plate 7 fit closer. Since most of the suction force acts on the inside of the stainless steel tubes in the feeding slot 42, the internal air of the stainless steel tubes can be sucked and guided to a farther place through the multiple air guide tubes 74. When the suction step starts, the guide posts 36 at the front end of the welding machine component 3 are inserted into the stainless steel tubes to be welded. This group of stainless steel tubes is in the corresponding tube slots 21. To ensure the accuracy of the welding position,The diameter of the guide post 36 is usually not much different from the inner diameter of the stainless steel pipe. Therefore, when the welding head 35 rotates for circular welding, the heat generated by it will act on the guide post 36, which may cause adhesive damage between the guide post 36 and the corresponding stainless steel pipe wall. In this device, the suction effect on the stainless steel pipe can reduce the space between the guide post 36 and the inner wall of the pipe groove 21, so that less heat from the outside welding of the stainless steel pipe is transferred to the outside of the guide post 36, thereby avoiding the possible adhesive damage between the guide post 36 and the corresponding stainless steel pipe wall. Moreover, under the suction effect, the heat generated during welding can be led away through the air duct 74, reducing the working environment temperature.

[0040] Working principle: When multiple stainless steel pipes are transported into the pipe groove 21 and waiting for welding, take the auxiliary plate 7 and insert it into the inside of the welding rack 1 through the through groove 13, and fit it against the side of the automatic feeding component 4. At this time, the auxiliary plate 7 is in the middle position between the automatic feeding component 4 and the push-pull plate 5, and a plurality of fixing rings 712 provided on one side of the auxiliary plate 7 are inserted into the corresponding feeding grooves 42. When the auxiliary plate 7 is in contact with the automatic feeding component 4, the rubber ring 711 is attached to the side of the automatic feeding component 4, and the diameter of the rubber ring 711 is larger than the diameter of the feeding groove 42. By the electric drive air extraction component 73, a suction force is generated. At this time, the suction force acts on the stainless steel pipe inside the feeding groove 42 through the vertical cavity 72 and a plurality of fixing rings 712. Under the continuous action of the suction force, the air between the auxiliary plate 7 and the automatic feeding component 4 can be reduced, making the automatic feeding component 4 and the auxiliary plate 7 fit closer. Because most of the suction force acts on the inside of the stainless steel pipe in the feeding groove 42, at this time, the internal air of the stainless steel pipe can be sucked out and guided to a farther place through a plurality of air ducts 74. When the suction step starts, the guide post 36 at the front end of the welding machine component 3 and is inserted into the inside of the stainless steel pipe to be welded. This group of stainless steel pipes is inside the corresponding pipe groove 21. To ensure the accuracy of the welding position, the diameter of the guide post 36 is usually not much different from the inner diameter of the stainless steel pipe. Therefore, when the welding head 35 rotates for circular welding, the heat generated by it will act on the guide post 36, which may cause adhesive damage between the guide post 36 and the corresponding stainless steel pipe wall. In this device, the suction effect on the stainless steel pipe can reduce the space between the guide post 36 and the inner wall of the pipe groove 21, so that less heat from the outside welding of the stainless steel pipe is transferred to the outside of the guide post 36, thereby avoiding the possible adhesive damage between the guide post 36 and the corresponding stainless steel pipe wall. Moreover, under the suction effect, the heat generated during welding can be led away through the air duct 74, reducing the working environment temperature.

[0041] The foregoing has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments, and what is described in the above embodiments and the specification is only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for stainless steel pipe assembly, comprising a welding machine frame (1) and a welding machine component (3) movably installed at the end of the welding machine frame (1), characterized in that: Inside the welding frame (1), a tube sheet (2) is movably installed. Inside the welding frame (1), an automatic feeding assembly (4) is also slidably installed. The tube groove (21) is on the moving path of the automatic feeding assembly (4). At the end of the welding frame (1), a push-pull plate (5) is movably installed. The tube sheet (2) and the automatic feeding assembly (4) are located between the welding machine assembly (3) and the push-pull plate (5). Inside the tube sheet (2), a plurality of tube grooves (21) are penetrated. The plurality of tube grooves (21) are evenly distributed on the tube sheet (2). Inside the automatic feeding assembly (4), a plurality of feeding grooves (42) are penetrated. The plurality of feeding grooves (42) are evenly distributed on the automatic feeding assembly (4). Inside the plurality of feeding grooves (42), a conveying assembly (6) is movably installed. The conveying assembly (6) is used to convey the stainless steel tubes inside the feeding grooves (42).

2. The welding device for stainless steel pipe assembly according to claim 1, characterized in that: Inside the welding frame (1), a clamping groove (11) is opened. The tube sheet (2) is inserted into the clamping groove (11). Inside the welding frame (1), a plurality of guide rail grooves (14) are also opened. The automatic feeding assembly (4) slides inside the welding frame (1) by cooperating with the plurality of guide rail grooves (14). Above the L-shaped end of the welding frame (1), a lifting assembly (12) is installed. The lifting assembly (12) is connected to the welding machine assembly (3) by a rope. Inside the welding frame (1), a through groove (13) is penetrated upward.

3. The welding device for stainless steel pipe assembly according to claim 1, characterized in that: The welding machine assembly (3) includes a machine body (31) and a hanging lock (32) fixedly installed above the machine body (31). The hanging lock (32) is connected to the rope set by the lifting assembly (12). On the side of the machine body (31) facing the tube sheet (2), a plurality of thimbles (33) are evenly distributed. On the same side of the machine body (31), a guide post (36) is fixedly installed. Outside the guide post (36), a rotary power supply member (34) is movably installed. The rotary power supply member (34) is movably installed on the side of the machine body (31). At the end of the rotary power supply member (34), a welding head (35) is fixedly installed. The welding head (35) faces the guide post (36).

4. A welding device for stainless steel pipe assembly according to claim 1, characterized in that: Inside the automatic feeding assembly (4), a plurality of component grooves (43) are opened. The component grooves (43) are used to communicate two vertically adjacent feeding grooves (42). The conveying assembly (6) is movably installed inside the corresponding component grooves (43). Outside the automatic feeding assembly (4), a plurality of drive motors (41) are installed. The plurality of drive motors (41) are used to supply power to the plurality of conveying assemblies (6). The conveying assembly (6) includes a plurality of conveying members two (62) and conveying members three (63). The conveying members two (62) are located vertically above the conveying members three (63), and the conveying members two (62) and the conveying members three (63) are inside the same component groove (43).

5. A welding device for stainless steel pipe assembly according to claim 4, characterized in that: A plurality of first transport members (61) are movably installed inside the topmost and bottommost ends of the automatic feeding assembly (4). The plurality of first transport members (61) are movably installed at the inner top of a plurality of feeding grooves (42) opened at the topmost end of the automatic feeding assembly (4), and the plurality of first transport members (61) are movably installed at the inner bottom of a plurality of feeding grooves (42) opened at the bottommost end of the automatic feeding assembly (4). The first transport member (61), the second transport member (62), and the third transport member (63) are members made of the same structure.

6. The welding device for assembling stainless steel pipes according to claim 4, characterized in that: The third transport member (63) includes a plurality of gears (631) movably installed inside a member groove (43). The plurality of gears (631) are axially grouped in pairs, and a middle-end wheel (632) is fixedly installed between two axially distributed gears (631). A conveyor belt (633) is movably installed outside the plurality of middle-end wheels (632).

7. A welding device for stainless steel pipe assembly according to claim 6, characterized in that: The third transport member (63) meshes with the second transport member (62) above the third transport member (63) through a plurality of gears (631), and the gears (631) are connected to the corresponding drive motors (41) through shafts.

8. A welding device for stainless steel pipe assembly according to claim 7, characterized in that: The outer ends of the teeth fixedly installed on the outside of the gears (631) are arc-shaped. The plurality of middle-end wheels (632) are in transmission connection through the conveyor belt (633).

9. A welding device for stainless steel pipe assembly according to claim 2, characterized in that: An auxiliary plate (7) is movably installed above the welding machine frame (1). The width of the through groove (13) is greater than the width of the auxiliary plate (7), and the cross-sectional area of the auxiliary plate (7) corresponds to the cross-sectional area of the automatic feeding assembly (4).

10. A welding device for stainless steel pipe assembly according to claim 9, characterized in that: A plurality of air extraction assemblies (71) are fixedly installed on one side of the auxiliary plate (7). The plurality of air extraction assemblies (71) are evenly distributed on one side of the auxiliary plate (7). An air extraction member (73) is fixedly installed on the other side of the auxiliary plate (7). A plurality of air guide pipes (74) are fixedly installed on the side of the air extraction member (73). The air extraction assembly (71) includes a rubber ring (711) and a fixing ring (712) fixedly installed on one side of the auxiliary plate (7). The fixing ring (712) is located at the center of the corresponding rubber ring (711). A vertical cavity (72) is opened inside the auxiliary plate (7), and the vertical cavity (72) is communicated with the inside of the fixing ring (712).

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